When light enters a black hole, what happens to it?
I imagine the photons will either fall into the singularity, or the light will orbit just inside the event horizon indefinately.
(Some background to my question...)
I was reading a description of what someone falling into a black hole would experience, which said they wouldn't realise they had just passed the event horizon. I imagined that there would be an awful lot of star-light that's been shining onto the black hole for billions of years, so the doomed astronaught would see a large flash of light as it crossed the event horizon.
I also imagined that when a black hole loses mass and the event horizon shrinks, there would also a flash of light as the captured light managed to escape.
More likely is that I've made an error in my reasoning.